Coaxial camera illumination structure for Busbar welding guide

Abstract

The utility model discloses a coaxial camera lighting structure for Busbar welding guide, which relates to the technical field of new energy automobile power battery pack manufacturing and comprises a welding and coaxial camera part, a battery cell pole to be welded, a welding copper nozzle and a lighting system. The welding copper nozzle comprises a copper nozzle bracket, a copper nozzle and a copper nozzle through hole; the lighting system comprises a small-size patch type light source and a light source controller; according to the utility model, the small-size surface-mounted light source is adopted and is arranged between the copper nozzle and the pole to fully illuminate the pole, so that a coaxial camera can accurately position the pole, and the illumination requirement of visual positioning is met; the light source is fixed on the copper nozzle through heat-conducting glue, effective heat dissipation is achieved, the service life is guaranteed, the problem of illumination of a coaxial camera for Busbar welding guiding can be effectively solved, the blank of the existing production technology is solved, the Busbar welding rhythm in the automobile manufacturing industry is greatly improved, the increasing rhythm requirement of a PACK battery pack is met, and great influence and far-reaching significance are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of the manufacturing of power battery packs for new energy vehicles, and particularly relates to a coaxial camera lighting structure for Busbar welding guidance. Background Art

[0002] With the booming development of the new energy vehicle industry, the optimization of the performance and manufacturing process of power batteries, as core components, has become the focus of the industry. The efficiency of the power battery PACK assembly line directly affects the cost and delivery speed of vehicle manufacturing. In the manufacturing process of PACK battery packs, the Busbar welding process is one of the key steps, which involves the precise welding of internal connection pieces in the battery pack to ensure the effective transmission of current and the performance stability of the battery pack.

[0003] The Busbar welding process generally includes two main parts: a vision guidance system and a laser welding device. The vision guidance system precisely positions the pole columns to be welded through a high-precision camera and a lighting source to ensure the accuracy and consistency of welding. The laser welding device then performs efficient and precise welding on the pole columns and busbars according to the data provided by the vision system. However, with the continuous increase in the production rhythm of PACK battery packs in the market, the design of separating vision guidance and laser welding in the original process can no longer meet the requirements of rapid production. In order to shorten the production cycle and improve production efficiency, it is necessary to integrate the laser welding part with the vision guidance system to form a more compact and efficient welding guidance structure. In this integrated design, the use of a coaxial camera is the key. The coaxial camera can provide illumination coaxial with the laser welding beam, thereby enabling precise observation and positioning of the welding area. However, when the camera light source is integrated with the copper nozzle structure, shadows may be generated due to the occlusion of the copper nozzle structure, affecting the positioning accuracy of the pole columns.

[0004] Attached Figures 7-8 FIG. 16 is a schematic diagram of the Busbar welding process used in the prior art. When in use, first, the vision guidance device moves above the pole column to be welded, positions the pole column and then leaves above the welding pole column. After that, the copper nozzle structure presses the pole column and the busbar, and the laser welding device performs positioning welding on the pole column and the busbar through the vision guidance data. However, such an operation method is relatively slow and difficult to meet the requirements of high-efficiency production.

[0005] To solve this problem, there is an urgent need in the market to develop a new coaxial camera lighting structure that can provide uniform and efficient illumination for the coaxial camera without generating occluding shadows. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a coaxial camera lighting structure for Busbar welding guidance, so as to solve the problems raised in the above background technology. After integrating the laser welding part of the Busbar welding process with the vision guidance system, shadows will be generated due to the occlusion of the copper nozzle structure, affecting the welding positioning accuracy; and the hole depth of the copper nozzle is large, and high-concentration light cannot be achieved with upper lighting, so light cannot enter and return well, and only dark areas or blurred outlines will be obtained when taking pictures.

[0007] To achieve the above purpose, the present utility model provides the following technical solution: A coaxial camera lighting structure for Busbar welding guidance, including a welding and coaxial camera part, and a cell pole to be welded is arranged below it. A Busbar to be welded is placed on the top surface of the cell pole to be welded. A liftable and movable welding copper nozzle is arranged above the cell pole to be welded through a bracket; A lighting system is arranged on the welding copper nozzle; The welding copper nozzle includes a horizontally arranged copper nozzle bracket, and eight rectangular through holes are arranged on it. A copper nozzle is fixedly connected below each rectangular through hole, and a lighting system is jointly arranged on the outer wall of the copper nozzle; The lighting system includes a small-volume patch-type light source, which is fixed on the outer wall of the copper nozzle through heat-conducting glue. The wire connected to the small-volume patch-type light source is connected to a light source controller. Adjacent two light source controllers are inserted into one body and connected to a host computer through a wire.

[0008] Preferably, the welding and coaxial camera part is a structure that integrates a laser welding system and a coaxial camera used in the prior art, including a coaxial bracket arranged in the middle, a laser welding part is arranged on the left side of the coaxial bracket, and a coaxial camera is arranged on the right side.

[0009] Preferably, the laser welding part includes a protective shell arranged on the outside and fixedly connected to the coaxial bracket. A laser deflection lens is arranged inside the protective shell, and a galvanometer light source is arranged at the bottom end of the protective shell. At the same time, a welding part wiring port is embedded on the protective shell and is electrically connected to the host computer through a wire.

[0010] Preferably, the coaxial camera includes a camera shell fixedly connected to the coaxial bracket, and a camera is arranged on the top of the camera shell. A plurality of reflectors for light path refraction are jointly arranged inside the camera shell and the inside of the protective shell, so that things directly below the lens can be reflected to the camera through a plurality of reflectors, and then can be photographed through the camera; A camera external connection port is also arranged on the camera shell and is electrically connected to the host computer through a wire.

[0011] Preferably, the eight rectangular through holes are arranged side by side from left to right, with four in each row.

[0012] Preferably, four battery cells are arranged below the copper nozzle bracket, and two battery cell poles to be welded are arranged at the top of each battery cell.

[0013] Preferably, the small-size surface-mount light source has a specification of 5mm * 25mm.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The coaxial camera lighting structure for Busbar welding guidance provided by the present utility model adopts a small-size surface-mount light source, which is arranged between the copper nozzle and the pole to fully illuminate the pole, so that the coaxial camera can accurately locate the pole and meet the lighting requirements for visual positioning; the light source is fixed on the copper nozzle with heat-conducting glue to achieve effective heat dissipation, ensure the service life, can effectively solve the problem of lighting for the coaxial camera in Busbar welding guidance, fill the gap in the existing production technology, greatly improve the Busbar welding beat in the automotive manufacturing industry, meet the increasing beat requirements of the PACK battery pack, and has great influence and far-reaching significance.

[0016] The present utility model integrates the traditional camera positioning station and positioning welding station with distributed operations into a single station that combines positioning + welding + repair welding, which can reduce one operation station and one operation beat, thereby improving the welding efficiency while ensuring the welding quality. Description of the Drawings

[0017] Figure 1 Isometric view of the present utility model;

[0018] Figure 2 Is Figure 1 Front view;

[0019] Figure 3 Is Figure 2 Enlarged view of A in

[0020] Figure 4 Front view of the welding copper nozzle and the lighting system;

[0021] Figure 5 Is Figure 4 Bottom view of

[0022] Figure 6 Schematic diagram of the lighting system;

[0023] Figure 7 Schematic diagram of the positioning of the lighting system in the traditional Busbar welding process;

[0024] Figure 8 Schematic diagram of the positioning of the welding system in the traditional Busbar welding process;

[0025] In the figure: Welding and coaxial camera unit - 1, coaxial bracket - 11, laser welding unit - 12, protective housing - 121, galvanometer light source - 122, welding unit wiring port - 123, coaxial camera - 13, camera housing - 131, camera - 132, camera external port - 133, cell pole to be welded - 2, welding copper nozzle - 3, copper nozzle bracket - 31, rectangular through - hole - 32, copper nozzle - 33, copper nozzle through - hole - 34, lighting system - 4, small - volume surface - mount light source - 41, light source controller - 42. Detailed implementation mode

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Please refer to Figures 1-8 , Figure 1 which is the axonometric view of the present utility model; Figure 2 is Figure 1 the front view; Figure 3 is Figure 2 the enlarged view of A in Figure 4 is the front view of the welding copper nozzle and the lighting system; Figure 5 is Figure 4 the bottom view of

[0028] Figure 6 is the schematic diagram of the lighting system; Figure 7 is the schematic diagram of the lighting system positioning in the traditional Busbar welding process; Figure 8 is the schematic diagram of the welding system positioning in the traditional Busbar welding process.

[0029] The present utility model provides a coaxial camera lighting structure for Busbar welding guidance, including a welding and coaxial camera unit 1. Below the welding and coaxial camera unit 1, there is a cell pole 2 to be welded. On the top surface of the cell pole 2 to be welded, there is a tab to be welded. Above the cell pole 2 to be welded, there is a liftable and movable welding copper nozzle 3 arranged through a bracket; on the welding copper nozzle 3, there is a lighting system 4.

[0030] The welding and coaxial camera unit 1 is a structure that integrates a laser welding system and a coaxial camera used in the prior art and can be purchased on the market. It includes a coaxial bracket 11 arranged in the middle, a laser welding unit 12 arranged on the left side of the coaxial bracket 11, and a coaxial camera 13 arranged on the right side of the coaxial bracket 11;

[0031] The laser welding part 12 includes a protective housing 121 disposed on the outside and fixedly connected to the coaxial bracket 11. A laser deflection lens is disposed inside the protective housing 121, and a galvanometer light source 122 is disposed at the bottom end of the protective housing 121. Meanwhile, a welding part wiring port 123 is embedded on the protective housing 121 for electrical connection to the upper computer through a wire. The coaxial camera 13 includes a camera housing 131 fixedly connected to the coaxial bracket 11, and a camera 132 is disposed on the top of the camera housing 131. A plurality of reflectors for light path refraction are commonly disposed inside the camera housing 131 and inside the protective housing 121, so that the object directly below the galvanometer light source 122 can be reflected to the camera 132 through the plurality of reflectors, and thus can be photographed by the camera 132. A camera external connection port 133 is further disposed on the camera housing 131 for electrical connection to the upper computer through a wire.

[0032] The welding copper nozzle 3 includes a copper nozzle bracket 31 disposed horizontally, and eight rectangular through holes 32 are disposed on the copper nozzle bracket 31. The eight rectangular through holes 32 are arranged side by side in the left - right direction, with four in each row. A copper nozzle 33 is fixedly connected below each rectangular through hole 32, and an illumination system 4 is commonly disposed on the outer wall of the copper nozzle 33.

[0033] The illumination system 4 includes a small - volume patch - type light source 41. The small - volume patch - type light source 41 is fixed on the outer wall of the copper nozzle 33 by a heat - conducting adhesive. The wire connected to the small - volume patch - type light source 41 is connected to a light source controller 42. Two adjacent light source controllers 42 are plugged into each other to form an integral body and are connected to the upper computer through a wire.

[0034] The specification of the small - volume patch - type light source 41 is 5mm * 25mm. On the basis of ensuring sufficient illumination, the volume is also minimized as much as possible to avoid affecting laser welding.

[0035] When the small - volume patch - type light source 41 is installed, according to the coaxiality of the camera and the laser deflection lens, an optical path inclination angle can be calculated, and the light source is arranged according to this inclination angle, which can increase the amount of light reflected by the object entering the camera.

[0036] In addition, four battery cells are disposed below the copper nozzle bracket 31, and two battery cell poles 2 to be welded are disposed at the top end of each battery cell, so that the battery cell poles 2 to be welded of the four battery cells can be welded with tabs at one time.

[0037] The coaxial camera lighting structure for Busbar welding guidance provided by the present utility model adopts a small-sized surface-mount light source, which is arranged between the copper nozzle and the pole column to fully illuminate the pole column, so that the coaxial camera can accurately locate the pole column and meet the lighting requirements for visual positioning; the light source is fixed on the copper nozzle with thermal conductive glue to achieve effective heat dissipation, ensure the service life, can effectively solve the problem of lighting for the coaxial camera used in Busbar welding guidance, fill the gap in the existing production technology, greatly improve the Busbar welding beat in the automotive manufacturing industry, meet the increasing beat requirements of the PACK battery pack, and has great influence and far-reaching significance.

[0038] Although the embodiments of the present utility model have been shown and described, obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, for those of ordinary skill in the art, it can be understood that without departing from the principle and spirit of the present utility model, all other embodiments obtained by making various changes, modifications, substitutions, and variations to these embodiments without creative work belong to the scope of protection of the present utility model.

Claims

1. A coaxial camera lighting structure for Busbar welding guidance, characterized in that: The invention comprises a welding and coaxial camera part (1) and a battery pole (2) to be welded is arranged below the welding part, a bar to be welded is placed on the top surface of the battery pole (2) to be welded, and a welding copper nozzle (3) which can be lifted and lowered is arranged above the battery pole (2) through a bracket; a lighting system (4) is arranged on the welding copper nozzle (3); the welding copper nozzle (3) comprises a horizontally arranged copper nozzle bracket (31) and eight rectangular through holes (32) are arranged on the copper nozzle, a copper nozzle (33) is fixedly connected below each rectangular through hole (32), and a lighting system (4) is arranged on the outer wall of the copper nozzle (33); the lighting system (4) comprises a small-volume SMD light source (41) and is fixed on the outer wall of the copper nozzle (33) through a thermal conductive adhesive, the wire connected to the small-volume SMD light source (41) is connected to a light source controller (42), and two adjacent light source controllers (42) are plugged into each other as a whole and connected to a host computer through a wire.

2. The coaxial camera lighting structure for Busbar welding guidance according to claim 1, characterized in that: The welding and coaxial camera part (1) is a structure used in the prior art that integrates a laser welding system and a coaxial camera, and includes a coaxial bracket (11) arranged in the middle, a laser welding part (12) arranged on the left side of the coaxial bracket (11), and a coaxial camera (13) arranged on the right side.

3. The coaxial camera lighting structure for Busbar welding guidance according to claim 2, characterized in that: The laser welding part (12) comprises a protective shell (121) arranged on the outside and fixedly connected to the coaxial bracket (11), a laser deflection lens is arranged on the inside of the protective shell (121), and a galvanometer light source (122) is arranged at the bottom end of the protective shell (121), and a welding part wiring port (123) is embedded in the protective shell (121) and is electrically connected to a host computer through a wire.

4. The coaxial camera lighting structure for Busbar welding guidance according to claim 3 is characterized in that: The coaxial camera (13) comprises a camera housing (131) fixedly connected to the coaxial bracket (11), and a camera (132) is arranged on the top of the camera housing (131), and a plurality of reflectors for light path refraction are arranged on the inner side of the camera housing (131) and inside the protective housing (121), so that objects directly below the galvanometer light source (122) can be reflected to the camera (132) through the plurality of reflectors, so that they can be photographed by the camera (132); a camera external port (133) is also arranged on the camera housing (131) and is electrically connected to a host computer through a wire.

5. The coaxial camera lighting structure for Busbar welding guidance according to any one of claims 1 to 4, characterized in that: Eight rectangular through holes (32) are arranged side by side, four in each row.

6. The coaxial camera lighting structure for Busbar welding guidance according to claim 5, characterized in that: Four battery cells are arranged below the copper nozzle bracket (31), and two battery cell poles (2) to be welded are arranged at the top of each battery cell.

7. The coaxial camera lighting structure for Busbar welding guidance according to claim 6, characterized in that: The specification of the small-volume patch-type light source (41) is 5 mm*25 mm.

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